Long term hydraulic conductivity of compacted soils permeated with landfill leachate

Autores
Francisca, Franco Matias; Glatstein, Daniel Alejandro
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This study evaluates the relative influence of biological, physical and chemical interactions on the percolation of leachate through compacted soil liners. The long term hydraulic conductivity of compacted silt-bentonite mixtures was measured with distilled water, landfill leachate and a nutrient solution. The soil hydraulic conductivity decreased significantly with time when the permeating liquid contained microorganisms. The decrease of hydraulic conductivity was caused by reduction of the effective porosity due to pore clogging. Pore clogging was analyzed considering physical, chemical and biological processes. The effect of microbes on the hydraulic conductivity of soil liners permeated with leachate prevailed over that produced by physical or chemical interactions. The presence of microbial activity was confirmed by direct observations of the microbial population in the permeating liquid, by microbial exopolysaccharides (EPS) encountered in the soil pores, and from inverse modeling analysis of pore bioclogging. The existence of microbes in the compacting and permeating liquids reduced up to two orders of magnitude the long term hydraulic conductivity. The results were in good agreement with the expected behavior when biofilms develop around soil particles.
Fil: Francisca, Franco Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Glatstein, Daniel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Materia
BACTERIA
BENTONITE
CLAY MINERALS
HYDRAULIC CONDUCTIVITY
LEACHATE
PORE CLOGGING
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/187686
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/187686
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Long term hydraulic conductivity of compacted soils permeated with landfill leachateFrancisca, Franco MatiasGlatstein, Daniel AlejandroBACTERIABENTONITECLAY MINERALSHYDRAULIC CONDUCTIVITYLEACHATEPORE CLOGGINGhttps://purl.org/becyt/ford/2.7https://purl.org/becyt/ford/2This study evaluates the relative influence of biological, physical and chemical interactions on the percolation of leachate through compacted soil liners. The long term hydraulic conductivity of compacted silt-bentonite mixtures was measured with distilled water, landfill leachate and a nutrient solution. The soil hydraulic conductivity decreased significantly with time when the permeating liquid contained microorganisms. The decrease of hydraulic conductivity was caused by reduction of the effective porosity due to pore clogging. Pore clogging was analyzed considering physical, chemical and biological processes. The effect of microbes on the hydraulic conductivity of soil liners permeated with leachate prevailed over that produced by physical or chemical interactions. The presence of microbial activity was confirmed by direct observations of the microbial population in the permeating liquid, by microbial exopolysaccharides (EPS) encountered in the soil pores, and from inverse modeling analysis of pore bioclogging. The existence of microbes in the compacting and permeating liquids reduced up to two orders of magnitude the long term hydraulic conductivity. The results were in good agreement with the expected behavior when biofilms develop around soil particles.Fil: Francisca, Franco Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; ArgentinaFil: Glatstein, Daniel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; ArgentinaElsevier Science2010-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/187686Francisca, Franco Matias; Glatstein, Daniel Alejandro; Long term hydraulic conductivity of compacted soils permeated with landfill leachate; Elsevier Science; Applied Clay Science; 49; 3; 7-2010; 187-1930169-1317CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0169131710001389info:eu-repo/semantics/altIdentifier/doi/10.1016/j.clay.2010.05.003info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:01:58Zoai:ri.conicet.gov.ar:11336/187686instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:01:58.9CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Long term hydraulic conductivity of compacted soils permeated with landfill leachate
title Long term hydraulic conductivity of compacted soils permeated with landfill leachate
spellingShingle Long term hydraulic conductivity of compacted soils permeated with landfill leachate
Francisca, Franco Matias
BACTERIA
BENTONITE
CLAY MINERALS
HYDRAULIC CONDUCTIVITY
LEACHATE
PORE CLOGGING
title_short Long term hydraulic conductivity of compacted soils permeated with landfill leachate
title_full Long term hydraulic conductivity of compacted soils permeated with landfill leachate
title_fullStr Long term hydraulic conductivity of compacted soils permeated with landfill leachate
title_full_unstemmed Long term hydraulic conductivity of compacted soils permeated with landfill leachate
title_sort Long term hydraulic conductivity of compacted soils permeated with landfill leachate
dc.creator.none.fl_str_mv Francisca, Franco Matias
Glatstein, Daniel Alejandro
author Francisca, Franco Matias
author_facet Francisca, Franco Matias
Glatstein, Daniel Alejandro
author_role author
author2 Glatstein, Daniel Alejandro
author2_role author
dc.subject.none.fl_str_mv BACTERIA
BENTONITE
CLAY MINERALS
HYDRAULIC CONDUCTIVITY
LEACHATE
PORE CLOGGING
topic BACTERIA
BENTONITE
CLAY MINERALS
HYDRAULIC CONDUCTIVITY
LEACHATE
PORE CLOGGING
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.7
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv This study evaluates the relative influence of biological, physical and chemical interactions on the percolation of leachate through compacted soil liners. The long term hydraulic conductivity of compacted silt-bentonite mixtures was measured with distilled water, landfill leachate and a nutrient solution. The soil hydraulic conductivity decreased significantly with time when the permeating liquid contained microorganisms. The decrease of hydraulic conductivity was caused by reduction of the effective porosity due to pore clogging. Pore clogging was analyzed considering physical, chemical and biological processes. The effect of microbes on the hydraulic conductivity of soil liners permeated with leachate prevailed over that produced by physical or chemical interactions. The presence of microbial activity was confirmed by direct observations of the microbial population in the permeating liquid, by microbial exopolysaccharides (EPS) encountered in the soil pores, and from inverse modeling analysis of pore bioclogging. The existence of microbes in the compacting and permeating liquids reduced up to two orders of magnitude the long term hydraulic conductivity. The results were in good agreement with the expected behavior when biofilms develop around soil particles.
Fil: Francisca, Franco Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Glatstein, Daniel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
description This study evaluates the relative influence of biological, physical and chemical interactions on the percolation of leachate through compacted soil liners. The long term hydraulic conductivity of compacted silt-bentonite mixtures was measured with distilled water, landfill leachate and a nutrient solution. The soil hydraulic conductivity decreased significantly with time when the permeating liquid contained microorganisms. The decrease of hydraulic conductivity was caused by reduction of the effective porosity due to pore clogging. Pore clogging was analyzed considering physical, chemical and biological processes. The effect of microbes on the hydraulic conductivity of soil liners permeated with leachate prevailed over that produced by physical or chemical interactions. The presence of microbial activity was confirmed by direct observations of the microbial population in the permeating liquid, by microbial exopolysaccharides (EPS) encountered in the soil pores, and from inverse modeling analysis of pore bioclogging. The existence of microbes in the compacting and permeating liquids reduced up to two orders of magnitude the long term hydraulic conductivity. The results were in good agreement with the expected behavior when biofilms develop around soil particles.
publishDate 2010
dc.date.none.fl_str_mv 2010-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/187686
Francisca, Franco Matias; Glatstein, Daniel Alejandro; Long term hydraulic conductivity of compacted soils permeated with landfill leachate; Elsevier Science; Applied Clay Science; 49; 3; 7-2010; 187-193
0169-1317
CONICET Digital
CONICET
url http://hdl.handle.net/11336/187686
identifier_str_mv Francisca, Franco Matias; Glatstein, Daniel Alejandro; Long term hydraulic conductivity of compacted soils permeated with landfill leachate; Elsevier Science; Applied Clay Science; 49; 3; 7-2010; 187-193
0169-1317
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0169131710001389
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.clay.2010.05.003
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.993085

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